func createSubnet(id uint) gomaasapi.CreateSubnet {                             
        var s gomaasapi.CreateSubnet                                            
        s.DNSServers = []string{"192.168.1.2"}                                  
        s.Name = fmt.Sprintf("maas-eth%v", id)                                  
        s.Space = fmt.Sprintf("space-%v", id)                                   
        s.GatewayIP = fmt.Sprintf("192.168.%v.1", id)                           
        s.CIDR = fmt.Sprintf("192.168.%v.0/24", id)                             
        s.ID = id                                                               
        return s                                                                
}                                                                               
                                                                                
func (suite *environSuite) TestSpaces(c *gc.C) {                                
        // We still need the createSubnets call to setup the nodes.             
        suite.createSubnets(c, true)                                            
        suite.testMAASObject.TestServer.SetVersionJSON(`{"capabilities": ["network-deployment-ubuntu"]}`)
        var out bytes.Buffer                                                    
        err := json.NewEncoder(&out).Encode(createSubnet(1))                    
        c.Assert(err, jc.ErrorIsNil)                                            
        suite.testMAASObject.TestServer.NewSubnet(&out)                         
                                                                                
        _, err = suite.makeEnviron().Spaces()                                   
        c.Assert(err, jc.ErrorIsNil)                                            
}